CN106817288B

CN106817288B - A data center network system and signal transmission system

Info

Publication number: CN106817288B
Application number: CN201510859557.5A
Authority: CN
Inventors: 曹耀兵; 颜清华; 苏立清; 胡棣; 曲继先; 王传兵
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-11-30
Filing date: 2015-11-30
Publication date: 2019-06-14
Anticipated expiration: 2035-11-30
Also published as: EP3364605A1; US20180278331A1; EP3364605B1; CN106817288A; US10454585B2; WO2017092215A1; EP3364605A4

Abstract

The invention discloses a kind of data centre network system and signal transmission systems, each interchanger possesses the hub device that there is communication connection with itself, hub device and group of switches are at star-network topological structure, compared to mesh network topologies structure, it is routed between equipment in star-network topological structure less, it thus can be effectively reduced network layout quantity, reduce the workload of subsequent network maintenance；And, the signal of source server output passes sequentially through the source interchanger that there is communication connection with source server, hub device, and there is the purpose interchanger of communication connection with destination server, and then reach destination server, all signals are only forwarded by hub device, the level of signal forwarding is less, to be advantageously implemented the network structure flattening of data centre network system, reduce energy consumption caused by core layer equipment and convergence layer equipment, effectively reduces system energy consumption and cost of equipment maintenance.

Description

A kind of data centre network system and signal transmission system

Technical field

The present invention relates to field of communication technology more particularly to a kind of data centre network systems and signal transmission system.

Background technique

Data center network is the network applied to data center, mainly by a large amount of two layers of access device and on a small quantity Three-layer equipment composition.As shown in fig.1, existing data center network is the hierarchical structure of classification convergence, generally comprises and connect Enter three layer, convergence layer and core layer levels.

As shown in fig.1, in the hierarchical structure of classification convergence, when server 1 needs to send signal to server 2 When, since server 1 and server 2 belong to different access layer equipments, the corresponding access layer equipment 1 of server 1 needs The signal is sent to access layer equipment 1, access layer equipment 1 needs the signal being sent to convergence layer equipment 1；Due to converging Poly layer equipment 1 administers access layer equipment 2 belonging to server 2, and therefore, the signal is sent to access layer by convergence layer equipment 1 Equipment 2, and the signal is sent to server 2 by access layer equipment 2.

It can be seen that the hierarchical structure of additional fractionation convergence is equivalent to tree, the letter that each server is sent It number is intended to be forwarded by convergence layer equipment and/or core layer equipment, with the demand of growing working transmission, meeting Higher and higher to the performance requirement of convergence layer equipment and core layer equipment, high performance convergence layer equipment and core layer equipment will be made At networking is at high cost and the subsequent problem to plant maintenance difficulty.

Currently, generalling use the equipment sides such as convergence layer equipment and the core layer equipment in removal conventional data centers network Method solves the problem of the height of networking cost present in conventional data centers network and plant maintenance difficulty, i.e., is classified convergence Hierarchy transform the mesh architecture of decentralization as, makes there is physics connecting path between every two interchangers, when any When one server needs to access another server, only connected by the interchanger and another server of any one server connection Physical connection access between the interchanger connect, can be communicated.Using the technical solution, it is transmitted across although solving signal Transmission bottleneck problem caused by convergence layer equipment and core layer equipment in journey, has achieved the purpose that decentralization, but every two It is required to the scheme of direct channel between switch device, there is a problem of that number of wires is huge.

It can be seen that current data center network there are number of wires huge, difficult in maintenance problem.

Summary of the invention

The embodiment of the present invention provides a kind of data centre network system and signal transmission system, to solve in traditional data Number of wires present in heart network is huge, problem difficult in maintenance.

Specific technical solution provided in an embodiment of the present invention is as follows:

In a first aspect, providing a kind of data centre network system, including a hub device, at least two interchangers are more A glory module, at least two multiplexer/demultiplexers and at least two servers, in which:

At least one interchanger and at least one server at least two interchanger, which exist, to be communicated to connect, and every The different input/output end ports of one interchanger exist from different glory modules to be communicated to connect；

The different glory modules that input/output end ports different from each interchanger have communication connection are closed with one There is communication connection in wave/channel-splitting filter, wherein different interchangers passes through glory module and different multiplexer/demultiplexer communication links It connects；

At least two interchanger constitutes star-network with one hub device by the multiplexer/demultiplexer and opens up Structure is flutterred, the hub device is communicated to connect by different ports from different multiplexer/demultiplexers respectively；

The interchanger, for receiving at least two path signal, and in at least two path signal per all the way Electric signal is handled according to following processing modes for first via electric signal respectively: the mesh carried in determining and first via electric signal The corresponding input/output end port in address, the first via electric signal is exported by the input/output end port of the determination； Wherein, the destination address is used to indicate destination server, and input/output end port corresponding with the destination address refers to and institute State input/output end port corresponding to the purpose interchanger of destination server communication connection, the destination server be it is described extremely A server in few two servers, the purpose interchanger is the interchanger communicated to connect with the destination server； At least two path signal is included any of the following or is combined: there is the server transmission of communication connection with this interchanger Electric signal, and, the electric signal of other interchangers at least two interchanger；

The glory module, the input/output end port for receiving the interchanger that there is communication connection with itself are defeated Electric signal out, and the received electric signal is converted to the optical signal of specific wavelength, wherein the difference with an interchanger The wavelength that input/output end port has the optical signal of the different glory module conversions of communication connection is different；

The multiplexer/demultiplexer, multiple glory modules for receiving with itself there is communication connection send more respectively A optical signal, and by the multiple optical signal wavelength-division multiplex at combining signal；

The hub device, the combining signal sent for receiving the multiplexer/demultiplexer, and by the combining signal solution Multiplexing, obtains multiple optical signals；The multiple optical signal is respectively sent to the purpose interchanger with each optical signal therein Corresponding port, and each optical signal is exported from the corresponding port, the optical signal wave that will be exported from same port Divide and is multiplexed with combining signal；

The multiplexer/demultiplexer, is further used for receiving the combining signal from hub device, and by the combining signal Demultiplexing, obtains multiple optical signals, and the multiple optical signal is inputted to glory corresponding with the wavelength of the optical signal respectively Module；

The glory module, is further used for receiving the optical signal from the multiplexer/demultiplexer, and by the optical signal Output gives the input/output end port that itself there is the interchanger of communication connection after being converted to electric signal；

The interchanger is further used for for the electric signal received from glory module being transmitted to the purpose of the electric signal Server.

With reference to first aspect, in the first possible implementation, the system also includes SDN controller, the SDN Each interchanger in controller and system, which exists, to be communicated to connect: the interchanger, is further used for receiving at least electric all the way Signal, and for it is described at least all the way in electric signal per electric signal all the way respectively according to following places for being directed to the second road electric signal Reason mode is handled: input/output end port corresponding with the destination address carried in the second road electric signal is determined, electric with the second tunnel When the corresponding input/output end port load of the destination address carried in signal is overloaded, Xiang Suoshu SDN controller sends load overload Notice；The SDN controller, for when receiving the notice of interchanger transmission, in the exchange for sending the notice In each input/output end port of machine, its in addition to input/output end port corresponding with the destination address of the second road electric signal He selects at least one input/output end port in input/output end port, and at least one input/output end port of selection is anti- The interchanger for the transmission notice of feeding；In at least two interchanger, Xiang Suoshu SDN controller sends the friendship of notice Change planes, be further used for by it is received it is described at least all the way electric signal by the SDN controller feed back at least one input/ Output port output.

The first possible implementation with reference to first aspect, in the second possible implementation, the SDN control At least one input/output end port that device selects loads in the input/output end port for the interchanger for sending the notice Measure at least one the smallest input/output end port.

The first possible implementation with reference to first aspect, in the third possible implementation, the SDN control Device removes and the second tunnel telecommunications in each input/output end port of interchanger for sending the notice according to load balancing principle Number the corresponding input/output end port of destination address except other input/output end ports in select at least one input/output Port.

By adopting the above technical scheme, by SDN controller to the topology and packet loss state etc. in data centre network system It is monitored, signal is scheduled according to the load condition of each port of each interchanger by SDN controller, is made each The load balancing of each port of a interchanger avoids section ports congestion, the low problem of signal transmitting efficiency.

With reference to first aspect, the first possible implementation of first aspect, second of possible implementation, the third Any one of possible implementation, in the fourth possible implementation, at least one in the multiple glory module A glory module is located at the inside for the interchanger that there is communication connection with itself.

With reference to first aspect, the first possible implementation of first aspect, second of possible implementation, the third Possible implementation, any one of the 4th kind of possible implementation, in a fifth possible implementation, the pivot Knob equipment is array waveguide grating AWG.

It by adopting the above technical scheme, can be by the optical signal transmission of the different wave length received to data center by AWG Each of network system interchanger, to logically realize the whole network covering；Also, since AWG is optical device, light The performance for learning device will be far superior to electricity device, therefore, realize in data centre network system interchanger two-by-two by AWG While interconnection, additionally it is possible to solve that multi-layer network bring network equipment power consumption is big in the prior art and maintenance difficult Problem.

With reference to first aspect, the first possible implementation of first aspect, second of possible implementation, the third Possible implementation, the 4th kind of possible implementation, any one of the 5th kind of possible implementation, in the 6th kind of possibility Implementation in, interchanger is also used to after receiving at least two path signal: the judgement at least two path signal In with the presence or absence of be transmitted to itself exist communication connection server electric signal；If it exists, then pass through the electric signal The electric signal is forwarded to exist with itself by the input/output end port on the corresponding interchanger of destination address to be communicated to connect Destination server；Otherwise, it executes on the corresponding interchanger of destination address that the electric signal is passed through the electric signal Input/output end port the electric signal is sent to and the input/output end port has the glory module of communication connection Step.

With reference to first aspect, the first possible implementation of first aspect, second of possible implementation, the third Possible implementation, the 4th kind of possible implementation, the 5th kind of possible implementation, in the 6th kind of mode in the cards Any one, in the 7th kind of possible implementation, when in the routing policy for including in the interchanger do not include destination When the corresponding input/output end port in address, the interchanger is also used to: the destination address carried according to the electric signal, to All input/output end ports of itself send broadcast message respectively, are obtained using transmission control protocol TCP/interconnection protocol IP agreement The input/output end port for taking feedback response message, by the input/output end port of the feedback response message and the electric signal Mapping relations between the destination address of middle carrying are saved into routing policy；The electric signal is disappeared by the feedback response The input/output end port of breath is sent to the glory module that there is communication connection with itself.

By adopting the above technical scheme, when not including the destination address carried in electric signal in the routing policy of interchanger, Interchanger can obtain the corresponding input/output end port of the destination address by ICP/IP protocol, to ensure that electric signal Reliable transmission improves the efficiency of electric signal transmission.

Second aspect provides a kind of signal transmission system, contains at least two star-network topological structure, each star Shape network topology structure includes a hub device, at least two interchangers, multiple glory modules, at least two multiplex/partial wave There is communication connection in device and at least two servers, the hub device in at least two star-networks topological structure,

Wherein, in a star-network topological structure: the exchange of at least one of described at least two interchanger Machine and at least one server, which exist, to be communicated to connect, and the different input/output end ports of each interchanger and different glories There is communication connection in module, the different glory modules that input/output end ports different from each interchanger have communication connection are equal Exist with a multiplexer/demultiplexer and communicate to connect, wherein different interchangers passes through glory module and different multiplex/partial waves Device communication connection, at least two interchanger constitute radial network by the multiplexer/demultiplexer and one hub device Network topological structure, the hub device are communicated to connect by different ports from different multiplexer/demultiplexers respectively；

Between the star-network topological structure described in any two: the institute in one of them described star-network topological structure Interchanger is stated, for receiving at least two path signal, and for distinguishing in at least two path signal per electric signal all the way Handle according to following processing modes for first via electric signal: determination is corresponding with the destination address carried in first via electric signal Input/output end port, the first via electric signal is exported by the input/output end port of the determination；Wherein, the mesh Address be used to indicate destination server, input/output end port corresponding with the destination address refers to and the purpose service Input/output end port corresponding to the purpose interchanger of device communication connection, the destination server are that another star-network is opened up The server in structure is flutterred, the purpose interchanger is the interchanger communicated to connect with the destination server；Described at least two Road electric signal is included any of the following or is combined: there is the electric signal of the server transmission of communication connection with this interchanger, with And it is sent from other interchangers at least two interchanger of same star-network topological structure are belonged to this interchanger Electric signal, and the electric signal from the interchanger for belonging to different star-network topological structures from this interchanger；

The hub device, for receive with the hub device be located at the multiplex of same star-network topological structure/point The combining signal that wave device is sent, and/or, the hub device for being located at different star-network topological structures from the hub device is sent Combining signal, and by the combining signal demultiplex, obtain multiple optical signals；By the multiple optical signal be respectively sent to The corresponding port of purpose interchanger of each optical signal therein, and each optical signal is defeated from the corresponding port It out, is combining signal by the optical signal wavelength-division multiplex exported from same port, wherein in obtained the multiple optical signal at least The purpose interchanger of one optical signal is located at another star-network topological structure, and it is starlike that the purpose interchanger is located at another The optical signal of network topology structure is exported by a port of the hub device, and is transmitted to another hub device；

The multiplexer/demultiplexer is further used for receiving the combining from the hub device that there is communication connection with itself Signal, and the combining signal is demultiplexed, multiple optical signals are obtained, and the multiple optical signal is inputted and the light respectively The corresponding glory module of the wavelength of signal；

The glory module is further used for receiving from the multiplexer/demultiplexer that there is communication connection with itself Optical signal, and the optical signal is converted into output after electric signal and gives the input that itself there is the interchanger of communication connection/defeated Exit port；

The interchanger, the electric signal for being further used for receive from the glory module that there is communication connection with itself turn Issue the destination server of the electric signal.

In conjunction with second aspect, in the first possible implementation, the system also includes software defined network SDN controls Each interchanger in device processed, the SDN controller and system, which exists, to be communicated to connect: the interchanger is further used for connecing It receives at least electric signal all the way, and is at least directed to second according to following respectively per electric signal all the way in electric signal all the way for described The processing mode of road electric signal is handled: determine input/output end port corresponding with the destination address carried in the second road electric signal, When input/output end port corresponding with the destination address carried in the second road electric signal is loaded and is overloaded, Xiang Suoshu SDN controller Send the notice of load overload；The SDN controller, for sending institute when receiving the notice of interchanger transmission It states in each input/output end port of the interchanger of notice, except input/output corresponding with the destination address of the second road electric signal At least one input/output end port is selected in other input/output end ports except port, and at least one by selection is defeated Enter/output port feeds back to the interchanger for sending the notice；In at least two interchanger, Xiang Suoshu SDN control Device send notice interchanger, be further used for by it is received it is described at least all the way electric signal by the SDN controller feedback At least one input/output end port output.

In conjunction with second aspect or second aspect the first possible implementation, in second of possible implementation In, at least one input/output end port that the SDN controller selects for the interchanger for sending the notice input/ At least one the smallest input/output end port of load capacity in output port.

In conjunction with second aspect, the first possible implementation of second aspect, appointing in second of possible implementation One, in the third possible implementation, the SDN controller is sending the notice according to load balancing principle In each input/output end port of interchanger, in addition to input/output end port corresponding with the destination address of the second road electric signal Other input/output end ports in select at least one input/output end port.

In conjunction with second aspect, the first possible implementation of second aspect, second of possible implementation, the third Any one of possible implementation, in the fourth possible implementation, the system also includes extensible arm interchanger, The hub device is communicated to connect by the extensible arm interchanger and other at least one hub devices.

In conjunction with second aspect, the first possible implementation of second aspect, second of possible implementation, the third Possible implementation, any one of the 4th kind of possible implementation, in a fifth possible implementation, when described In the routing policy for including in interchanger when input/output end port corresponding not comprising destination-address, the interchanger is also used In: the destination address carried according to the electric signal, all input/output end ports of Xiang Zishen broadcast the message respectively, use Transmission control protocol TCP/interconnection protocol IP agreement obtains the input/output end port of feedback response message, by the feedback response The mapping relations between destination address carried in the input/output end port of message and the electric signal are saved to routing policy In；The electric signal is sent to by the input/output end port of the feedback response message and there is communication connection with itself Glory module.

In the embodiment of the present invention, data centre network system uses star-network topological structure, the star-network topology knot There is communication connection between each hub device and at least two interchangers, in each star centered on hub device in structure In shape network topology structure, there are communication links at least one server at least one interchanger at least two interchangers It connects.Using technical solution of the present invention, each interchanger possesses the hub device that there is communication connection with itself, hub device It need not in star-network topological structure compared to mesh network topologies structure at star-network topological structure with group of switches Physical connection channel is established between respective switch equipment, wiring is less between each equipment, it is thus possible to be effectively reduced Network layout quantity reduces the workload of subsequent network maintenance；Also, it compared in current three-layer network framework, is taken by source Business device is sent to all signals of destination server, is required to be forwarded by convergence layer equipment and core layer equipment, this hair The signal that source server exports in the data centre network system of bright embodiment is passed sequentially through to exist with source server and be communicated to connect Source interchanger, hub device, and with destination server exist communication connection purpose interchanger, and then reach purpose service Device, all signals are only forwarded by hub device, and compared to three-layer network framework, the level of signal forwarding is less, thus It is advantageously implemented the network structure flattening of data centre network system, is reduced caused by core layer equipment and convergence layer equipment Energy consumption, effectively reduce system energy consumption and cost of equipment maintenance；In addition, further including glory mould in data centre network system The electric signal that server is sent to interchanger is converted optical signal by block, the glory module, make hub device and glory module it Between only transmit optical signal, due to optical signal have transmission reliability height, the advantage that transmission speed is fast and transmitted data amount is big, Therefore, the data centre network system of the embodiment of the present invention can carry more huge data volume, and improve signal transmission Reliability and efficiency of transmission.

Detailed description of the invention

Fig. 1 is data center network structural schematic diagram in the prior art；

Fig. 2 a is data centre network system physical connection structural schematic diagram in the embodiment of the present invention one；

Fig. 2 b is data centre network system logical connection structure schematic diagram in the embodiment of the present invention one；

Fig. 3 is the flow chart for carrying out signal transmission in the embodiment of the present invention two in data centre network system；

Fig. 4 is switch architecture schematic diagram in the embodiment of the present invention two；

Fig. 5 is AWG of embodiment of the present invention partial wave schematic diagram；

Fig. 6 is another switch architecture schematic diagram in the embodiment of the present invention two；

Fig. 7 is the data centre network system structural schematic diagram in the embodiment of the present invention two comprising extensible arm interchanger；

Fig. 8 is switch architecture schematic diagram in the embodiment of the present invention three；

Fig. 9 is the flow chart for carrying out signal transmission in the embodiment of the present invention three in data centre network system；

Figure 10 is signal transmission system configuration diagram in the embodiment of the present invention six；

Figure 11 is the structural schematic diagram of a POD in the embodiment of the present invention six；

Figure 12 is a ZONE structural schematic diagram in the embodiment of the present invention six；

Figure 13 a is multiple ZONE horizontal extension schematic diagrames in the embodiment of the present invention six；

Figure 13 b is that multiple ZONE vertically extend schematic diagram in the embodiment of the present invention six.

Specific embodiment

Huge, the difficult in maintenance problem in order to solve number of wires present in conventional data centers network, the present invention are real It applies in example, data centre network system uses star-network topological structure, during which with hub device is There is communication connection between each hub device and at least two interchangers in the heart, in each star-network topological structure, At least one interchanger and at least one server at least two interchangers, which exist, to be communicated to connect.Using the technology of the present invention side Case, each interchanger possess the hub device that there is communication connection with itself, and hub device and group of switches are at radial network Network topological structure, compared to mesh network topologies structure, in star-network topological structure need not respective switch equipment it Between establish physical connection channel, wiring is less between each equipment, it is thus possible to network layout quantity be effectively reduced, after reduction The workload of continuous network operation；Also, compared in current three-layer network framework, destination server is sent to by source server All signals, be required to be forwarded by convergence layer equipment and core layer equipment, data center's net of the embodiment of the present invention In network system source server export signal pass sequentially through with source server exist communication connection source interchanger, hub device, And there is the purpose interchanger of communication connection with destination server, and then reach destination server, all signals only pass through pivot Knob equipment is forwarded, and compared to three-layer network framework, the level of signal forwarding is less, to be advantageously implemented data center's net The network structure flattening of network system reduces energy consumption caused by core layer equipment and convergence layer equipment, effectively reduces and is Energy consumption of uniting and cost of equipment maintenance；In addition, further including glory module in data centre network system, which will be serviced The electric signal that device is sent to interchanger is converted into optical signal, makes only to transmit optical signal between hub device and glory module, due to Optical signal have transmission reliability height, the advantage that transmission speed is fast and transmitted data amount is big, therefore, the embodiment of the present invention Data centre network system can carry more huge data volume, and improve the reliability and efficiency of transmission of signal transmission.

Description of specific embodiments of the present invention with reference to the accompanying drawing.

Embodiment one

It is data center network architecture schematic diagram in the embodiment of the present invention, the data center network system refering to shown in Fig. 2 a System includes hub device 20, at least two interchangers 21, multiple glory modules 22, at least two multiplexer/demultiplexers 23, Yi Jizhi Few two servers 24, in which:

At least one interchanger and at least one server 24 at least two interchanger 21, which exist, to be communicated to connect, And there is communication connection from different glory modules 22 in the different input/output end ports of each interchanger 21；

From the different input/output end ports of each interchanger 21 exist the different glory modules 22 of communication connection with one There is communication connection in multiplexer/demultiplexer 23, wherein different interchangers 21 passes through glory module 22 and different multiplex/partial waves Device 23 communicates to connect；

At least two interchanger 21 is made up of the multiplexer/demultiplexer 23 with one hub device 20 starlike Network topology structure, the hub device 20 are communicated to connect by different ports from different multiplexer/demultiplexers 23 respectively；

The interchanger 21, for receiving at least two path signal, and for each in at least two path signal Road electric signal is handled according to following processing modes for first via electric signal respectively: being carried in determining and first via electric signal The corresponding input/output end port of destination address, it is by the input/output end port of the determination that the first via electric signal is defeated Out；Wherein, the destination address is used to indicate destination server, and input/output end port corresponding with the destination address refers to Input/output end port corresponding to purpose interchanger with destination server communication connection, the destination server is institute A server at least two servers 24 is stated, the purpose interchanger is the friendship communicated to connect with the destination server It changes planes；At least two path signal is included any of the following or is combined: there is the server of communication connection with this interchanger 24 electric signals sent, and, the electric signal of other interchangers at least two interchanger 21；

The glory module 22, for receiving the input/output terminal for the interchanger 21 that there is communication connection with itself The electric signal of mouthful output, and the received electric signal is converted to the optical signal of specific wavelength, wherein with an interchanger 21 The different input/output end ports wavelength that there is the optical signal that the different glory modules 22 of communication connection are converted be different；

The multiplexer/demultiplexer 23 is sent respectively for receiving the multiple glory modules 22 that there is communication connection with itself Multiple optical signals, and by the multiple optical signal wavelength-division multiplex at combining signal；

The hub device 20, the combining signal sent for receiving the multiplexer/demultiplexer 23, and the combining is believed Number demultiplexing, obtain multiple optical signals；The multiple optical signal is respectively sent to hand over the purpose of each optical signal therein It changes planes corresponding port, and each optical signal is exported from the corresponding port, the light exported from same port is believed Number wavelength-division multiplex is combining signal；

The multiplexer/demultiplexer 23, is further used for receiving the combining signal from hub device 20, and by the combining Signal demultiplexing, obtains multiple optical signals, and the multiple optical signal is inputted respectively corresponding with the wavelength of the optical signal Glory module 22；

The glory module 22, is further used for receiving the optical signal from the multiplexer/demultiplexer 23, and by the light Output gives the input/output end port that itself there is the interchanger 21 of communication connection after signal is converted to electric signal；

The interchanger 21 is further used for the electric signal received from glory module 22 being transmitted to the electric signal Destination server.

Further, the data centre network system further includes software defined network (Software Defined Network, abbreviation SDN) controller 25, the SDN controller 25 exists with each interchanger 21 in system to be communicated to connect:

The interchanger 21, is further used for receiving at least electric signal all the way, and for described at least all the way in electric signal Handled respectively according to following processing modes for being directed to the second road electric signal per electric signal all the way: it is determining in the second road electric signal The corresponding input/output end port of the destination address of carrying, it is corresponding with the destination address carried in the second road electric signal input/ When output port load overload, Xiang Suoshu SDN controller 25 sends the notice of load overload；

The SDN controller 25, for sending the notice when receiving the notice of the transmission of interchanger 21 In each input/output end port of interchanger 21, except input/output end port corresponding with the destination address of the second road electric signal it Select at least one input/output end port in other outer input/output end ports, and by least one input/output of selection Port feeds back to the interchanger 21 for sending the notice；

In at least two interchanger 21, Xiang Suoshu SDN controller 25 send notice interchanger, be further used for by Received at least one input/output end port output that at least electric signal is fed back by the SDN controller all the way.

Optionally, at least one input/output end port that the SDN controller 25 selects is the transmission notice At least one the smallest input/output end port of load capacity in the input/output end port of interchanger 21.

Optionally, the SDN controller 25 is sending each defeated of the interchanger of the notice according to load balancing principle Enter/output port in, in addition to input/output end port corresponding with the destination address of the second road electric signal other input/it is defeated At least one input/output end port is selected in exit port.

Optionally, at least one glory module is located at itself in the presence of communication connection in the multiple glory module 22 The inside of interchanger 21.

Optionally, the multiplexer/demultiplexer 23 is located at the inside for the interchanger 21 that there is communication connection with itself.

Optionally, communication connection is wirelessly established between the server 24 and the interchanger 21, alternatively, institute It states and communication connection is established by wire cable mode between server 24 and the interchanger 21；The interchanger 21 and the coloured silk Communication connection is wirelessly established between optical module 22, alternatively, leading between the interchanger 21 and the glory module 22 It crosses wire cable mode and establishes communication connection；Between the glory module 22 and the multiplexer/demultiplexer 23 wirelessly Communication connection is established, is communicated to connect alternatively, being established between the glory module 22 and the multiplexer/demultiplexer 23 by optical fiber； Communication connection is wirelessly established between the multiplexer/demultiplexer 23 and hub device 20, alternatively, the multiplex/partial wave Communication connection is established by an optical fiber between device 23 and hub device 20.

Optionally, the hub device 20 is array waveguide grating (Array Waveguide Grating, abbreviation AWG).

When the hub device is AWG, the optics partial wave characteristic based on the AWG, the data center of the embodiment of the present invention Network system can be constituted refering to logical connection structure schematic diagram shown in Fig. 2 b, which logically can Enough realize netted connection.

Embodiment two

Based on the data centre network system of the embodiment one description, for ease of description, below with data center's net Network system includes source server, source interchanger, hub device, purpose interchanger and destination server, the source server with There is communication connection in multiple glory modules, all glory modules with a multiplexer/demultiplexer (hereinafter referred to as source multiplex/partial wave Device) there is communication connection, the destination server, which also exists with multiple glory modules, to be communicated to connect, and all glory modules are with one There is communication connection in a multiplexer/demultiplexer (hereinafter referred to as purpose multiplexer/demultiplexer), and source server and source interchanger are in the presence of logical Letter connection, destination server and purpose interchanger, which exist, to be communicated to connect, equal with source multiplexer/demultiplexer and purpose multiplexer/demultiplexer For hub device described in an intelligent acess, multipath signal propagation process in the present invention is described in detail embodiment.

Wherein, source server and destination server are relative concept, i.e. the server of generation signal is source server, are connect The server for receiving the signal is destination server, any one server both can be source server, or purpose clothes Business device, for example, server A sends signal a to server B, then in the transmission process of signal a, server A is source service Device, server B are destination server；For another example, server A receives the signal b that server B is sent, then being transmitted across in signal b Cheng Zhong, server A are destination server, and server B is source server.

As shown in fig.3, transport stream signal journey in the data centre network system of the embodiment of the present invention, comprising:

Step 300: source interchanger receives at least two path signal, and for every electric all the way in at least two paths of signals Signal is handled according to following processing modes for first via electric signal respectively: the purpose carried in determining and first via electric signal The corresponding input/output end port in address is exported the first via electric signal by the input/output end port of the determination.

As shown in fig.4, for switch architecture schematic diagram in the embodiment of the present invention.Source interchanger one end includes multiple downlinks Port, each downlink port are all connected with different source servers, and the other end includes multiple input/output end ports, each input/defeated Exit port is all connected with different glory modules.

In the embodiment of the present invention, the received at least two path signal of source interchanger includes any of following a variety of situations : there is the electric signal of the source server transmission of communication connection with origin interchanger in a kind of or combination, and, from other exchanges The electric signal of machine.

Wherein, there is at least two path signal that the source server of communication connection is sent with source interchanger, comprising: source service The quantity of device is one, and source server generates at least two-way electricity for being sent at least two destination servers according to business demand Signal；For example, source server generates two path signal, respectively electric signal 1 and electric signal 2, the corresponding purpose of electric signal 1 clothes Business device is server 1, and the corresponding destination server of electric signal 2 is server 2, electric signal 1 and the corresponding purpose service of electric signal 2 Device is different, and source interchanger receives the signal 1 and signal 2 that the source server is sent.There is the source of communication connection with source interchanger Server send at least two path signal, further includes: the quantity of source server be it is multiple, each source server is according to business need It asks, generates at least two path signal for being sent to destination server respectively；For example, source server A generates electric signal 1, source service Device B generates electric signal 2, and electric signal 1 and the corresponding destination server of electric signal 2 may be the same or different, source interchanger Receive signal 1 and signal 2.

Optionally, the signal that source server is sent out can be optical signal, or electric signal.If the source server The signal sent out is optical signal, then since interchanger does not have the ability of processing optical signal, handed in source server and source Between changing planes, or inside the source interchanger, it is also necessary to photoelectric conversion device is set, the photoelectric conversion device respectively with There is communication connection between the source server and the source interchanger, the optical signal conversion for sending the source server For electric signal, and the electric signal obtained after conversion is sent to the source interchanger.

Wherein, the source interchanger is rack interchanger (Top of Rack, abbreviation TOR), and first interchanger is The Ethernet switch for having three layer functions；The downlink port of the source interchanger can be turned by SFP+/XFP 10GE photoelectricity Port realization is changed, includes a 10GE LAN optical module in 10GE photoelectric conversion port, the 10GE LAN optical module is defeated Out be 850 nanometers of multimode optical signal；The input/output end port of the source interchanger may include 10GE LAN optical module or Person's 10GE LAN electricity module.

In addition, data center network system in the quantity and concrete application scene of the input/output end port of the source interchanger The quantity of interchanger and interconnection bandwidth are related in system, i.e., described when the quantity of interchanger in data centre network system is more Input/output end port number is bigger, and the interconnection bandwidth is bigger, and the input/output end port number is bigger；For example, in data Heart network system disposes n 10G link there are N platform TOR and M platform extensible arm interchanger between any two TOR, TOR with extend M 10G link is disposed between arm interchanger, then the input/output end port number of each TOR are as follows: n (N-1)+mM；Such as totally 24 TOR, 3 extensible arm interchangers are all made of between any TOR and other TOR, and between any TOR and extensible arm interchanger One 10G link interconnection, then input/output end port number is that 26 (1* (24-1)+1*3=26) are a.

Optionally, include routing policy in the source interchanger, include input/output end port and mesh in the routing policy Address field between mapping relations, when source interchanger receive source server transmission electric signal when, that is, obtain the telecommunications The destination address carried in number, chooses that there are the defeated of mapping relations with the destination address section of the acquisition from the routing policy Enter/output port, the electric signal is sent to the input/output end port of the selection.Wherein, the routing policy is When creating data centre network system, it is pre-configured with to obtain according to network deployment.

Optionally, as shown in fig.4, may include optical path selection control inside the source interchanger, by the optical path Selection control according to routing policy, exports the electric signal received into itself all input/output end port, with electric signal The corresponding input/output end port of the destination address of middle carrying.

Further, source interchanger is after receiving at least two path signal, it is also necessary to the judgement at least two-way With the presence or absence of the electric signal for being transmitted to the server that there is communication connection with itself in electric signal；If it exists, then directly pass through institute Input/output end port corresponding with the destination address carried in the electric signal on the interchanger of source is stated to be forwarded to the electric signal There is the destination server of communication connection with itself；Otherwise, it executes the electric signal by being chosen according to the routing policy Input/output end port by the electric signal be sent to the input/output end port of the selection exist communication connection glory The step of module.

Further, when in the routing policy for including in the source interchanger do not include destination-address it is corresponding input/ When output port, the source interchanger according to the electric signal distinguish by the middle destination address carried, Xiang Suoyou input/output end port Broadcast message is sent, using transmission control protocol (Transmission Control Protocol, abbreviation TCP)/interconnection protocol (Internet Protocol, abbreviation IP) agreement obtains the input/output end port of feedback response message, by the feedback response The mapping relations between destination address carried in the input/output end port of message and the electric signal are saved to routing policy In；The electric signal is sent to and oneself by the source interchanger by the input/output end port of the feedback response message simultaneously There is the glory module of communication connection in body.

By adopting the above technical scheme, the destination carried in electric signal is not included in the routing policy that source server includes When location, source server can obtain the corresponding input/output end port of the destination address by ICP/IP protocol, to ensure that electricity The reliable transmission of signal improves the efficiency of electric signal transmission.

Step 310: there is the glory module communicated to connect with the source interchanger and receive the letter that the source interchanger is sent Number, the optical signal that the received electric signal is converted to specific wavelength is exported to source multiplexer/demultiplexer.

In the embodiment of the present invention, as shown in fig.4, each input/output end port of the source interchanger is separately connected One glory module, the electric signal that each glory module is able to receive are converted to the optical signal of different wave length.Its In, when the wavelength for the optical signal that each glory module can be handled is creation data centre network system, disposed according to network It is pre-configured with to obtain.

Optionally, the glory module is 10GE glory module, and the 10GE glory module glory module output is 1310 nanometers or 1550 nanometers of single mode optical signal.

By adopting the above technical scheme, the electric signal comprising different destination addresses received is respectively sent to by source interchanger Different input/output end ports, the optical signal that can be handled by the glory module that each input/output end port is connected Wavelength is different, so that multi-channel electric signal to be converted to the optical signal of different wave length, different electric signals is distinguished by wavelength, also just In subsequent hub device according to the wavelength of the optical signal, the purpose interchanger that the optical signal is sent to is identified.

Step 320: each road optical signal wavelength-division multiplex received is combining signal by source multiplexer/demultiplexer, and will be described Combining signal is sent to hub device.

In the embodiment of the present invention, source multiplexer/demultiplexer has wavelength-division multiplex function, and solution wavelength-division multiplex function, source are closed Wave/channel-splitting filter can receive the optical signal generated with all glory modules that itself there is communication connection, and each by what is received A optical signal is physically combined into is combined signal all the way, output to glory mouth；It wherein, include each coloured silk in the combining signal The optical signal for each wavelength that optical module is sent；The source multiplexer/demultiplexer by the combining signal by the source multiplex/point An optical fiber between wave device and the hub device is transmitted to the hub device.

By adopting the above technical scheme, the multi-channel electric signal that interchanger is sent is converted into optical signal, and will be obtained after conversion Optical signal hub device is transmitted to by an optical fiber, to ensure that the reliability of interchanger institute transmission telecommunications number, and by Have the big feature of capacity in optical fiber, only by an optical fiber, the transmission of signal between interchanger and hub device can be met Therefore amount can effectively reduce data center network system by optical fiber transmission telecommunications number compared to using cable transmission signal The amount of wiring of system.

Step 330: the hub device receives the combining signal that source multiplexer/demultiplexer is sent, and by the combining signal Demultiplexing, obtains multiple optical signals；The multiple optical signal is respectively sent to exchange with the purpose of each optical signal therein The corresponding port of machine, and each optical signal is exported from the corresponding port, the optical signal that will be exported from same port Wavelength-division multiplex is combining signal.

In the embodiment of the present invention, the hub device receives source multiplexer/demultiplexer by a port of itself and passes through coloured silk The combining signal that optical port is sent, since each port of the hub device includes the mapping relations preestablished, It include the corresponding relationship of each wavelength and port, the mapping that each port is included in the hub device in the mapping relations Relationship is different, when which is creation data centre network system, is pre-configured with to obtain according to network deployment；Hub device The combining signal is demultiplexed, multiple optical signals are obtained；For each optical signal, the hub device be performed both by as Lower operation: according to the wavelength of the optical signal, the mapping relations that the port is included is searched, the light is searched from the mapping relations The corresponding port of the wavelength of signal, and by the optical signal transmission to the port found；Pass through the end found Mouthful, which is sent；When including multiple optical signals at the port found, the hub device is first by institute It states all optical signals for including at the port found and carries out wavelength-division multiplex, generation is combined signal all the way, then the combining is believed It number sends.

As shown in fig.5, for when the hub device is AWG, the AWG is each according to the wavelength of different optical signals A optical signal searches the structural schematic diagram of corresponding port.For the optical signal for multiple wavelength that source interchanger is sent, the AWG Using the wavelength of all optical signals of source interchanger input as an input matrix, (line number 1, columns N are every in matrix One element is the wavelength of an optical signal).

As shown in fig.5, the port a1 of the AWG is directed to, after the port a1 receives multiple optical signals, at the port Optical signal through the AWG partial wave processing after, generate transposed matrix (line number N, columns 1, the transposition square of the input matrix Each of battle array element is the wavelength of an optical signal), which is the output matrix of port a1, output matrix Each of element respectively correspond a port (b1 to bn)；For the port a2 of the AWG, the port a2 receives more After a optical signal, the optical signal at the port generates the transposed matrix of the input matrix after AWG partial wave processing, And the element circular in the transposed matrix is moved down one, generate output matrix, each of output matrix element Respectively correspond a port (b1 to bn)；And so on, AWG is directed to an port of the AWG, and the port an receives more After a optical signal, by the optical signal at the port after AWG partial wave processing, the transposed matrix of the input matrix is generated, And the element circular in the transposed matrix is moved down into the position (n-1), generate output matrix, each of output matrix member Element respectively corresponds a port (b1 to bn).Wherein, the light that the port a1 to an, b1 to bn can send for desampler The input port of signal, or the output port of optical signal is sent to interchanger.

It by adopting the above technical scheme, can be by the optical signal transmission of the different wave length received to data center by AWG Each of network system interchanger, to logically realize the whole network covering；Also, since AWG is optical device, light The performance for learning device will be far superior to electricity device, therefore, realize two of interchanger in data centre network system by AWG Two interconnection are simultaneously, additionally it is possible to solve that multi-layer network bring network equipment power consumption in the prior art is big and maintenance difficult The problem of.

Step 340: purpose multiplexer/demultiplexer receives the combining signal of the hub device, and by the combining signal solution Multiplexing, obtains multiple optical signals, and the multiple optical signal is inputted to glory mould corresponding with the wavelength of the optical signal respectively Block.

In the embodiment of the present invention, purpose multiplexer/demultiplexer passes through itself optical fiber between hub device, receives pivot The combining signal that knob equipment is sent, and the combining signal is subjected to demultiplexing process, obtain multiple optical signals；The purpose is closed Wave/channel-splitting filter is directed to each obtained optical signal, performs the following operations respectively: comprising wave in the purpose multiplexer/demultiplexer Long and glory module mapping relations；The purpose multiplexer/demultiplexer is searched from the mapping relations that itself is saved to be believed with the light Number wavelength there are the glory modules of mapping relations, and the optical signal is sent to the glory module found.

By adopting the above technical scheme, what multiplexer/demultiplexer passed through an optical fiber reception hub device transmission includes multiple letters Number combining signal, data center's net can be effectively reduced by optical fiber transmission telecommunications number compared to using cable transmission signal The amount of wiring of network system.

Optionally, the purpose multiplexer/demultiplexer can send optical signal to multiple glory modules simultaneously.For example, purpose After multiplexer/demultiplexer is to combining signal demultiplexing, signal 1, signal 2 and signal 3 are obtained, the wavelength of signal 1 is wavelength 1, signal 2 Wavelength be wavelength 2, the wavelength of signal 3 is wavelength 3；Then purpose multiplexer/demultiplexer is according to the mapping relations saved in itself, really The long 1 corresponding glory module of standing wave is glory module 2, and the corresponding glory module of wavelength 2 is glory module 3, the corresponding coloured silk of wavelength 3 Optical module is glory module 1, is based on this, signal 1 is sent to glory module 2 by purpose multiplexer/demultiplexer, and signal 2 is sent to Signal 3 is sent to glory module 1 by glory module 3.

Step 350: with the purpose multiplexer/demultiplexer exist communication connection glory module by the purpose multiplex/point Output gives the input/output that itself there is the purpose interchanger of communication connection after the optical signal that wave device is sent is converted to electric signal Port.

In the embodiment of the present invention, there is each glory module reception of communication connection with the purpose multiplexer/demultiplexer After the optical signal sent to the purpose multiplexer/demultiplexer, it is performed both by following operation: the optical signal is converted into electric signal, And by the electric signal transmission to the input/output end port with the glory module in the presence of the purpose interchanger of communication connection.

Step 360: the purpose interchanger obtains the destination address carried in the electric signal received, and by the telecommunications Number it is sent to purpose interchanger indicated by the destination address.

In the embodiment of the present invention, as shown in fig.4, purpose interchanger one end includes multiple downlink ports, each downstream end Mouth is all connected with different destination servers, and the other end includes multiple input/output end ports, and each input/output end port is all connected with Different glory modules.

Due to carrying destination address in the electric signal, purpose interchanger receives coloured silk from input/output end port After the electric signal that optical module is sent, it can determine according to the destination address carried in every electric signal all the way and connect the destination The downlink port of destination server indicated by location；The purpose interchanger is by the downlink port of the determination, by the electricity Signal is transmitted to corresponding destination server.

Optionally, the receivable signal of destination server is optical signal, or electric signal.If the destination server Received signal is optical signal, then since traditional interchanger does not have the ability of processing optical signal, in destination server Between purpose interchanger, or inside the purpose interchanger, it is also necessary to which photoelectric conversion device, the photoelectric conversion are set There is communication connection in device, be used between the destination server and the purpose interchanger respectively by the purpose interchanger The electric signal of transmission is converted to optical signal, and the optical signal obtained after conversion is sent to the destination server.Wherein, described The downlink port of purpose interchanger is identical as the downlink port of the source interchanger, the input/output terminal of the purpose interchanger Mouthful number determines that method and the input/output port mesh of the source interchanger determine that method is identical, the purpose interchanger it is interior Portion's structure is also identical as the internal structure of the source interchanger, and details are not described herein.

In specific application scenarios, as shown in fig.4, source interchanger is traditional ethernet interchanger, source server is logical Cross traditional ethernet technology access source interchanger；The routing policy that source interchanger is saved according to itself completes 24 tunnels and is input to 26 Road output electric crossbar transistion, wherein the source interchanger include 24 road downlink ports connection source server and 26 tunnels input/ Output port connects glory module, and input/output end port is had more compared to the port of source interchanger connection source server Port can connect extensible arm interchanger；The electric signal of 26 road input/output end ports output completes electricity by glory optical module Signal completes the modulated process of wavelength of optical signal by multiplexer/demultiplexer to the conversion of optical signal, and obtains after wavelength is modulated To combining signal gathering be multiplexed to source multiplexer/demultiplexer to output on an optical fiber to the Single port of hub device；Opposite, Combining signal (light letter of the combining signal comprising multiple wavelength of hub device transmission is received in purpose multiplexer/demultiplexer Number), which demultiplexes the combining signal by purpose multiplexer/demultiplexer, generates the light letter of different wave length Number, and according to the wavelength of each optical signal, each optical signal is exported to the glory for the optical signal for being capable of handling the wavelength respectively The optical signal is converted to electric signal, output to purpose interchanger, purpose interchanger root by different glory modules by module According to the destination address carried in electric signal, by the electric signal transmission to corresponding destination server.

In another application scenarios, as shown in fig.6, source interchanger and purpose interchanger are traditional ethernet exchange Machine, source server access source interchanger by traditional ethernet technology；Source interchanger is complete according to the routing policy that itself is saved The electric crossbar transistion of 64 tunnels output is input at 64 tunnels, wherein the source interchanger includes that 64 road downlink ports connect source server, And 64 road input/output end port connect glory module；Under this kind of application scenarios, signals transmission and application shown in Fig. 4 Scene is similar, and details are not described herein.

In the embodiment of the present invention, the star-network topological structure centered on a hub device is constituted a CELL, CELL can be corresponding with a business subregion in practical business, the delivery concepts such as unit or a system cluster.In reality It may include multiple CELL in the application scenarios of border, in network system, be connected between each CELL by extensible arm interchanger.Cause This, as shown in fig.7, including also extensible arm interchanger in CELL in the embodiment of the present invention, for connecting this CELL and other The form of CELL, extensible arm interchanger are consistent with TOR, but the differentiation of the supreme downlink port of extensible arm interchanger, all of the port The interconnection being used between different CELL.

It optionally, is every as shown in fig.7, data centre network system includes 24 TOR and 3 extensible arm interchangers One TOR and extensible arm interchanger all configure corresponding wavelength；Each TOR passes through 27 wavelength and other 23 TOR and 3 Extensible arm exchange mechanism is connected at network layer, the bandwidth of each wavelength carrying 10GB；23 in link layer, each TOR are defeated Enter/output port and other TOR interconnect, 3 input/output end ports and extensible arm interchanger interconnect；And in link layer, each The downlink port of TOR is 24 ports 10GE, and each TOR accesses 24 servers, i.e. every server is all connected with the one of TOR A 10GE downlink port；Also, include totally 52 ports 10GE in each extensible arm interchanger of link layer, wherein 26 ports connect This CELL is met, remaining 26 port and other adjacent Cs ELL are interconnected.

Using technical solution of the embodiment of the present invention, it is transformed without to existing Ethernet switch, directly in ether Multiplexer/demultiplexer and glory module are added between network switch and hub device, reduce scrap build cost；Also, The optical signal of multiple wavelength is greatly decreased in data centre network system by an optical fiber transmission by multiplexer/demultiplexer Number of wires, reduce data centre network system O&M difficulty；In addition, when hub device is AWG, composition data center AWG, interchanger and the server of network system are mininet equipment, by connecting mininet equipment, form equity, divide It dissipates, the interconnection between numerous skinny devices of indifference, constructs the full connection between the middle respective switch of data centre network system, Core layer equipment and convergence layer equipment need not be used, the construction cost and maintenance cost of data center network are reduced.

Embodiment three

Based on the data centre network system of the embodiment one description, for ease of description, below with data center's net Network includes source server, source interchanger, hub device, purpose interchanger and destination server, as shown in fig.8, the source In server include multiple glory modules and a source multiplexer/demultiplexer, all glory modules with the source multiplex/partial wave There is communication connection in device, the destination server also include multiple glory modules exist communication connection and a purpose multiplex/ Channel-splitting filter, all glory modules, which exist with the purpose multiplexer/demultiplexer, to be communicated to connect, and source server is deposited with source interchanger It is communicating to connect, destination server and purpose interchanger have communication connection, with the source multiplexer/demultiplexer and mesh in the interchanger of source Interchanger in multiplexer/demultiplexer pass through hub device described in an intelligent acess for, the present invention is described in detail implement Multipath signal propagation process in example.

Wherein, source server and destination server are relative concept, i.e. the server of generation signal is source server, are connect The server for receiving the signal is destination server, any one server both can be source server, or purpose clothes Business device.

As shown in fig.9, transport stream signal journey in the data centre network system of the embodiment of the present invention, comprising:

Step 900: source interchanger receives at least two path signal, and for every electric all the way in at least two paths of signals Signal is handled according to following processing modes for first via electric signal respectively: the purpose carried in determining and first via electric signal The corresponding input/output end port in address is exported the first via electric signal by the input/output end port of the determination；By The electric signal that the source interchanger receives is converted to the optical signal of specific wavelength by the glory module in the source interchanger；By The source multiplexer/demultiplexer in the source interchanger, the optical signal wavelength-division multiplex that the glory module is converted to are to close Road signal, and the combining signal is sent to hub device.

As shown in fig.8, for switch architecture schematic diagram in the embodiment of the present invention.Source interchanger one end includes multiple downlinks Port, each downlink port are all connected with different source servers, also include multiple input/output end ports in the interchanger of source, each Input/output end port is all connected with different glory modules.

In the embodiment of the present invention, the received at least two path signal of source interchanger includes any one of a variety of situations : there is the electric signal of the source server transmission of communication connection with origin interchanger in or combination, and, from other interchangers Electric signal.

Wherein, there is at least two path signal that the source server of communication connection is sent with source interchanger, comprising: source service The quantity of device is one, and source server generates at least two-way electricity for being sent at least two destination servers according to business demand Signal；Alternatively, the quantity of source server be it is multiple, each source server is generated be sent to purpose clothes respectively according to business demand At least two path signal of business device.

Optionally, the quantity of the internal structure of the source interchanger, downlink port form and input/output end port is true Determine method, identical as the source interchanger in embodiment two, details are not described herein.

It optionally, include routing policy inside the source interchanger, the source interchanger is obtained according to the routing policy The corresponding input/output end port of the electric signal, detailed process determine that electric signal is corresponding with the source interchanger in embodiment two Input/output end port mode it is identical, details are not described herein.

Further, when in the routing policy for including in the source interchanger do not include destination-address it is corresponding input/ When output port, the source interchanger obtains the mode and two provenance of embodiment of the corresponding input/output end port of the electric signal Interchanger does not include under the corresponding input/output end port scene of destination-address in routing policy, obtains the electric signal pair The mode for the input/output end port answered is identical, and details are not described herein.

Optionally, as shown in fig.8, may include optical path selection control inside the source interchanger, for that will receive The electric signal arrived is according to routing policy, output to itself corresponding input/output end port.

Further, source interchanger is after receiving at least two path signal, it is also necessary to the judgement at least two-way With the presence or absence of the electric signal for being transmitted to the server that there is communication connection with itself, treatment process and embodiment two in electric signal In source switch processes electric signal mode it is identical, details are not described herein.

Further, the electric signal that each of described source interchanger glory module is able to receive is converted to The optical signal of different wave length.Wherein, the wavelength for the optical signal that each glory module can be handled is creation data center network When system, it is pre-configured with to obtain according to network deployment.

In the embodiment of the present invention, source in the function of source multiplexer/demultiplexer, and the mode and embodiment two of processing optical signal The mode that multiplexer/demultiplexer handles optical signal is identical, and details are not described herein.

Step 910: the hub device receives the combining signal that source multiplexer/demultiplexer is sent, and by the combining signal Demultiplexing, obtains multiple optical signals；The multiple optical signal is respectively sent to exchange with the purpose of each optical signal therein The corresponding port of machine, and each optical signal is exported from the corresponding port, the optical signal that will be exported from same port Wavelength-division multiplex is combining signal.

In the embodiment of the present invention, the hub device receives combining signal, to the processing mode of combining signal, and combining The way of output of signal, and in embodiment two, the mode of hub device transmission combining signal is identical, and details are not described herein.

Step 920: the purpose multiplexer/demultiplexer in the purpose interchanger receives the combining signal of the hub device, And demultiplex the combining signal, multiple optical signals are obtained, and the multiple optical signal is inputted and the optical signal respectively The corresponding purpose interchanger of wavelength in glory module；By the glory module in the purpose interchanger by the purpose Output gives the defeated of the purpose interchanger that itself there is communication connection after the optical signal that multiplexer/demultiplexer is sent is converted to electric signal Enter/output port；The purpose interchanger obtains the destination address carried in the electric signal received, and the electric signal is sent out It send to purpose interchanger indicated by the destination address.

In the embodiment of the present invention, as shown in fig.8, the structure and function of the purpose interchanger and the source interchanger Structure and function are identical, and details are not described herein.

In specific application scenarios, as shown in fig.8, source interchanger and purpose interchanger are traditional ethernet exchange Machine, source server access source interchanger by traditional ethernet technology；Source interchanger is complete according to the routing policy that itself is saved The electric crossbar transistion of 26 tunnels output is input at 24 tunnels, wherein the source interchanger includes that 24 road downlink ports connect source server, And 26 road input/output end port connect glory module, input/output end port compared to the source interchanger connect source server The port that is had more of port can connect extensible arm interchanger.

Optionally, when the source interchanger and purpose interchanger are TOR, may exist one between any two TOR The direct connected link of 10G；It may be present between TOR and extensible arm interchanger and extensible arm interchanger and extensible arm interchanger a plurality of 10G link；In addition, connecting the port of hub device in TOR in media access control layer (Media Access Control, letter Claim MAC) it is rendered as the port 10GE, the 10G inter-connection links between a corresponding strip exchanger；In photosphere, the port 10GE It is λ that a wavelength will be mapped to by intersection_i, rate be 10G optical path on；Also, port and the expansion of hub device are connected in TOR The port of swing arm interchanger is the port of wavelength-division multiplex, and carrying N number of wavelength in the port is respectively λ₁λ₂λ₃…λ_NOptical signal, 10G link between the corresponding strip exchanger of each wavelength.

In another application scenarios, source interchanger and purpose interchanger are traditional ethernet interchanger, source server Source interchanger is accessed by traditional ethernet technology；The routing policy that source interchanger is saved according to itself is completed 64 tunnels and is input to The electric crossbar transistion of 64 tunnels output, wherein the source interchanger includes that 64 road downlink ports connection source server and 64 roads are defeated Enter/output port connection glory module.

Wherein, 32 road downlink port can be configured to the 24 road ports 10GE and the 2 road ports 40GE；32 tunnel inside ends Mouth can configure on demand, and 26 glory modules are only inserted into if needing to provide 26 road optical path signals.

Using technical solution of the embodiment of the present invention, wavelength-division multiplex technique and Ethernet Exchanger Technology are subjected to organic knot It closes, realizes optical fiber virtualization, the number of wires of data centre network system is greatly decreased, reduces the fortune of data centre network system Tie up difficulty；Also, when hub device is AWG, AWG, interchanger and server are mininet equipment, small-sized by connecting The network equipment forms equity, disperses, the interconnection between numerous skinny devices of indifference, constructs each in data centre network system Connecting entirely, realizing the new types of data central site network framework of centralization between a interchanger, without use core layer equipment and Convergence layer equipment reduces the construction cost and maintenance cost of data center network.

In the embodiment of the present invention, the star-network topological structure centered on a hub device is constituted a CELL, CELL can be corresponding with a business subregion in practical business, the delivery concepts such as unit or a system cluster.In reality In the data center network of border, it may include multiple CELL, be connected between each CELL by extensible arm interchanger.Therefore, join It reads shown in Fig. 7, includes also extensible arm interchanger in the CELL in the embodiment of the present invention, for connecting this CELL and other CELL, The form of extensible arm interchanger is consistent with TOR, but the differentiation of the supreme downlink port of extensible arm interchanger, all of the port are used to Interconnection between different CELL.

Example IV

Based on data centre network system described in the embodiment one to embodiment three, below with data center network Including source server, source interchanger, hub device, purpose interchanger and destination server, the source server and multiple coloured silks There is communication connection in optical module, all glory modules exist with a multiplexer/demultiplexer (hereinafter referred to as source multiplexer/demultiplexer) Communication connection, the destination server also with multiple glory modules exist communicate to connect, all glory modules with a multiplex/ There is communication connection in channel-splitting filter (hereinafter referred to as purpose multiplexer/demultiplexer), and source server and source interchanger have communication connection, Destination server and purpose interchanger, which exist, to be communicated to connect, and passes through one with source multiplexer/demultiplexer and purpose multiplexer/demultiplexer For hub device described in intelligent acess, multipath signal propagation process in the present invention is described in detail embodiment.

In the embodiment of the present invention, the source interchanger is that (hereinafter referred to as source exchanges the exchange plate based on frame server Plate), source server exists by the mode and source interchanger that are plugged in the exchange plate to be communicated to connect；Correspondingly, institute The exchange plate (hereinafter referred to as purpose exchange plate) that destination server is frame server is stated, destination server is by being plugged on Mode and purpose interchanger in the exchange plate, which exist, to be communicated to connect.

Optionally, transport stream signal journey and the signals transmission phase in the embodiment two in data centre network system Together, details are not described herein.

Further, the source interchanger can be the interchanger comprising glory module and source multiplexer/demultiplexer, and mesh Interchanger may be the interchanger comprising glory module and purpose multiplexer/demultiplexer, under this application scenarios, in data Signals transmission is similar with embodiment three in heart network system, and details are not described herein.

Embodiment five

In the embodiment of the present invention, the source interchanger is that (hereinafter referred to as source exchanges the exchange plate based on frame server Plate), source server exists by the mode and source interchanger that are plugged in the exchange plate to be communicated to connect；Alternatively, described Destination server is the exchange plate (hereinafter referred to as purpose exchange plate) of frame server, and destination server is by being plugged on There is communication connection in the mode and purpose interchanger stated in exchange plate.

Transport stream signal journey is similar with embodiment two and example IV in the data centre network system of the embodiment of the present invention, Details are not described herein.

Embodiment six

The embodiment one only includes a hub device into the data centre network system of embodiment five, refering to Fig. 7 It is shown, it further include extensible arm interchanger in the hub device, the extensible arm interchanger is for connecting this hub device and its His hub device.

As shown in fig.10, multiple CELL constitute signal transmission system, which contains at least two star Shape network topology structure, each star-network topological structure include a hub device 100, at least two interchangers 110, Multiple glory modules 120, at least two multiplexer/demultiplexers 130 and at least two servers 140, described at least two is starlike There is communication connection in the hub device 100 in network topology structure, in which:

In a star-network topological structure: at least one interchanger at least two interchanger 110 With at least one server 140 exist communicate to connect, and the different input/output end ports of each interchanger 110 from it is different There is communication connection in glory module 120；

There are the different glory modules 120 of communication connection with one from the different input/output end ports of each interchanger 110 There is communication connection in a multiplexer/demultiplexer 130, wherein different interchangers 110 by glory module 120 and different multiplex/ Channel-splitting filter 130 communicates to connect；

At least two interchanger 110 respectively by with itself exist communication connection multiplexer/demultiplexer 130 with it is described One hub device 100 constitutes star-network topological structure, the hub device 100 respectively by different ports from it is different Multiplexer/demultiplexer 130 communicates to connect；Any hub device at least two hub device 100 and other at least one There is communication connection between hub device；

Between the star-network topological structure described in any two: the institute in one of them described star-network topological structure Interchanger 110 is stated, for receiving at least two path signal, and for every electric signal all the way point in at least two path signal It is not handled according to following processing modes for first via electric signal: the destination address pair carried in determining and first via electric signal The input/output end port answered is exported the first via electric signal by the input/output end port of the determination；Wherein, described Destination address is used to indicate destination server, and input/output end port corresponding with the destination address refers to be taken with the purpose Input/output end port corresponding to the purpose interchanger of business device communication connection, the destination server are another star-network Server in topological structure, the purpose interchanger are the interchanger communicated to connect with the destination server；It is described at least Two path signal is included any of the following or is combined: there is the electric signal of the server transmission of communication connection with this interchanger, And it is sent out from other interchangers at least two interchanger of same star-network topological structure are belonged to this interchanger The electric signal come, and the electric signal from the interchanger for belonging to different star-network topological structures from this interchanger；

Glory module 120, for receiving the input/output end port for the interchanger 110 that there is communication connection with itself The electric signal of output, and the received electric signal is converted to the optical signal of specific wavelength, wherein not with an interchanger The wavelength that there is the optical signal of the different conversions of glory modules 120 of communication connection with input/output end port is different；

The multiplexer/demultiplexer 130 is sent out respectively for receiving the multiple glory modules 120 that there is communication connection with itself The multiple optical signals sent, and by the multiple optical signal wavelength-division multiplex at combining signal；

The hub device 100 is used for: receiving the conjunction for being located at same star-network topological structure with the hub device 100 The combining signal that wave/channel-splitting filter 130 is sent, and/or, the hinge of different star-network topological structures is located at from the hub device The combining signal that equipment is sent, and the combining signal is demultiplexed, obtain multiple optical signals；The multiple optical signal is distinguished It is sent to port corresponding with the purpose interchanger of each optical signal therein, and by each optical signal from described corresponding The optical signal wavelength-division multiplex exported from same port is combining signal, wherein obtained the multiple optical signal by port output In the purpose interchanger of at least one optical signal be located at another star-network topological structure, the purpose interchanger is located at another The optical signal of a star-network topological structure is exported by a port of the hub device, and is transmitted to another hinge and is set It is standby；

The multiplexer/demultiplexer 130 is further used for receiving the hub device 100 from there is communication connection with itself Combining signal, and the combining signal is demultiplexed, obtains multiple optical signals, and the multiple optical signal input respectively and The corresponding glory module 120 of the wavelength of the optical signal；

Each glory module 120, be further used for receiving from the multiplex that there is communication connection with itself/point The optical signal of wave device 130, and the interchanger for giving itself and there is communication connection is exported after the optical signal is converted to electric signal 110 input/output end port；

The interchanger 110 is further used for the telecommunications that will be received from the glory module that there is communication connection with itself Number it is transmitted to the destination server 140 of the electric signal.

Further, the system also includes SDN controller 150, the SDN controller 150 and each friendships in system 110 are changed planes in the presence of communication connection:

The interchanger 110, is further used for receiving at least electric signal all the way, and for described at least all the way in electric signal Handled respectively according to following processing modes for being directed to the second road electric signal per electric signal all the way: it is determining in the second road electric signal The corresponding input/output end port of the destination address of carrying, it is corresponding with the destination address carried in the second road electric signal input/ When output port load overload, Xiang Suoshu SDN controller 150 sends the notice of load overload；

The SDN controller 150, for sending the notice when receiving the notice of the transmission of interchanger 110 Interchanger 110 each input/output end port in, except input/output terminal corresponding with the destination address of the second road electric signal Select at least one input/output end port in other input/output end ports except mouthful, and by least one input of selection/ Output port feeds back to the interchanger 110 for sending the notice；

In at least two interchanger, Xiang Suoshu SDN controller 150 sends the interchanger 110 of notice, is further used for Received at least one input/output end port that electric signal is fed back by the SDN controller 150 all the way described at least is defeated Out.

Optionally, at least one input/output end port that the SDN controller 150 selects sends the notice to be described Interchanger input/output end port at least one the smallest input/output end port of load capacity.

Optionally, the SDN controller 150 is sending each of the interchanger of the notice according to load balancing principle In input/output end port, in addition to input/output end port corresponding with the destination address of the second road electric signal other input/ At least one input/output end port is selected in output port.

In the embodiment of the present invention, it is known as collocation point (Point according to the network that certain rule and topology form by multiple CELL Of Deployment, abbreviation POD), the scale of POD is greater than CELL；In practical network environment, POD can be with an AZ (Avilable ZONE), corresponding to the cloud cluster or a computer room module in reality scene.

Optionally, the POD includes two kinds of forms, i.e. standard POD and non-standard POD.Wherein, standard POD has as follows Three conditions: all CELL structures for forming this POD are the same, i.e., the TOR quantity of all CELL, extensible arm interchanger quantity, every The TOR that includes in the port number and bandwidth of a TOR, the port number of extensible arm interchanger and bandwidth and each CELL and The connection type of extensible arm interchanger is all the same；All CELL are interconnected circlewise by extensible arm interchanger；For example, refering to fig. 11 It is shown, 6 CELL composition one POD: each CELL by 24 TOR and 3 extensible arm group of switches at；Each adjacent two CELL It is interconnected by extensible arm interchanger, alternatively, each adjacent two CELL is interconnected by the extensible arm of respective CELL；6 expansions are needed altogether Swing arm realizes connection, and constitutes a looped network.Non-standard POD has the following characteristics that the networking model of each CELL in POD can With difference；It is freely interconnected between different CELL by extensible arm interchanger, not necessarily forms looped network.

It is according to certain rules ZONE with the network of topology formation by multiple POD refering to fig. 1 shown in 2.ZONE is honeycomb The more POD of framework-honeycomb interconnect networking, which is the standard networking scheme of ZONE a kind of；Wherein, a ZONE is by 6 A POD interconnection composition, each adjacent two POD have 2 CELL overlappings, therefore inside a ZONE, share 24 CELL；Pass through side The extensible arm interchanger of edge can be with the element-interconn ections such as network egress.For example, data centre network system includes 576 cabinets, altogether Dispose 1 ZONE, 6 POD and 24 CELL, each CELL in the data centre network system includes 24 cabinets, not In the case where considering double uplink scenes, each cabinet includes 24 10GE servers, then the signal transmission network system can accommodate (576*24=13824) platform server.

Based on the ZONE, when the source interchanger and purpose interchanger are located at different POD, need through POD and Shared AWG between POD realizes signal transmission.

Refering to fig. 1 shown in 3a, multiple ZONE can be interconnected by horizontal extension, wherein horizontal extension can pass through extensible arm Interchanger is realized；Refering to fig. 1 shown in 3b, multiple ZONE can also be by vertically extending interconnection, wherein vertical extension can pass through Extensible arm interchanger is realized；Further, multiple ZONE can also be interconnected by spread mode, i.e., not according to above-mentioned standard The form of mode of extension, arbitrary networking, networking is unlimited, and topological structure is unlimited, and user can arbitrarily set according to concrete application scene It sets.

By adopting the above technical scheme, using equity small device realize the whole network connect, without use convergence layer equipment and Core layer equipment effectively prevents network bottleneck；Also, the network structure of decentralization is also convenient for the expansion to data center network Exhibition, improves system availability.

In conclusion data centre network system uses star-network topological structure, the radial network in the embodiment of the present invention There is communication connection between each hub device and at least two interchangers centered on hub device in network topological structure, In each star-network topological structure, at least one interchanger and at least one server at least two interchangers exist Communication connection.Using technical solution of the present invention, each interchanger possesses the hub device that there is communication connection with itself, pivot Knob equipment and group of switches are at star-network topological structure, compared to mesh network topologies structure, in star-network topological structure It is routed between equipment less, it is thus possible to network layout quantity be effectively reduced, reduce the workload of subsequent network maintenance；Also, Compared in current three-layer network framework, it is sent to all signals of destination server by source server, is required to pass through remittance Poly layer equipment and core layer equipment are forwarded, the letter that source server exports in the data centre network system of the embodiment of the present invention The source interchanger that there is communication connection with source server, hub device number are passed sequentially through, and exists with destination server and communicates The purpose interchanger of connection, and then destination server is reached, all signals are only forwarded by hub device, compared to three layers The level of the network architecture, signal forwarding is less, to be advantageously implemented the network structure flattening of data centre network system, subtracts Lack energy consumption caused by core layer equipment and convergence layer equipment, effectively reduces system energy consumption and cost of equipment maintenance；In addition, It further include glory module in data centre network system, which converts the electric signal that server is sent to interchanger For optical signal, make only to transmit optical signal between hub device and glory module, since optical signal has transmission reliability height, transmission The advantage that speed is fast and transmitted data amount is big, therefore, the data centre network system of the embodiment of the present invention can carry more Huge data volume, and improve the reliability and efficiency of transmission of signal transmission.

It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more, The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces The form of product.

The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates, Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or The function of being specified in multiple boxes.

These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.

Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as It selects embodiment and falls into all change and modification of the scope of the invention.

Obviously, those skilled in the art can carry out various modification and variations without departing from this hair to the embodiment of the present invention The spirit and scope of bright embodiment.In this way, if these modifications and variations of the embodiment of the present invention belong to the claims in the present invention And its within the scope of equivalent technologies, then the present invention is also intended to include these modifications and variations.

Claims

1. a kind of data centre network system, which is characterized in that including a hub device, at least two interchangers, Duo Gecai Optical module, at least two multiplexer/demultiplexers and at least two servers, in which:

At least one interchanger and at least one server at least two interchanger, which exist, to be communicated to connect, and each The different input/output end ports of interchanger exist from different glory modules to be communicated to connect；

Different from each interchanger input/output end ports exist the different glory modules of communication connection with a multiplex/point There is communication connection in wave device, wherein different interchangers is communicated to connect by glory module from different multiplexer/demultiplexers；

At least two interchanger constitutes star-network topology knot by the multiplexer/demultiplexer and one hub device Structure, the hub device are communicated to connect by different ports from different multiplexer/demultiplexers respectively；

The interchanger, for receiving at least two path signal, and for every telecommunications all the way in at least two path signal It is handled number respectively according to following processing modes for first via electric signal: determining with the destination carried in first via electric signal The corresponding input/output end port in location is exported the first via electric signal by the input/output end port of the determination；Wherein, The destination address is used to indicate destination server, and input/output end port corresponding with the destination address refers to and the mesh Server communication connection purpose interchanger corresponding to input/output end port, the destination server is described at least two A server in a server, the purpose interchanger are the interchanger communicated to connect with the destination server；It is described At least two path signal is included any of the following or is combined: there is the telecommunications of the server transmission of communication connection with this interchanger Number, and, the electric signal of other interchangers at least two interchanger；

The glory module, what the input/output end port for receiving the interchanger that there is communication connection with itself exported Electric signal, and the received electric signal is converted to the optical signal of specific wavelength, wherein different defeated from interchanger Enter/wavelength of optical signal of the output port different glory modules conversions that there is communication connection is different；

The multiplexer/demultiplexer, the multiple light sent respectively for receiving the multiple glory modules that there is communication connection with itself Signal, and by the multiple optical signal wavelength-division multiplex at combining signal；

The hub device, the combining signal sent for receiving the multiplexer/demultiplexer, and the combining signal is demultiplexed With obtaining multiple optical signals；The multiple optical signal is respectively sent to the purpose interchanger pair with each optical signal therein The port answered, and each optical signal is exported from the corresponding port, the optical signal wavelength-division that will be exported from same port It is multiplexed with combining signal；

The multiplexer/demultiplexer is further used for receiving the combining signal from hub device, and the combining signal is demultiplexed With obtaining multiple optical signals, and the multiple optical signal is inputted to glory module corresponding with the wavelength of the optical signal respectively；

The glory module is further used for receiving the optical signal from the multiplexer/demultiplexer, and the optical signal is converted The input/output end port that itself there is the interchanger of communication connection is given for output after electric signal；

The interchanger is further used for for the electric signal received from glory module being transmitted to the purpose service of the electric signal Device.

2. the system as claimed in claim 1, which is characterized in that the system also includes software defined network SDN controller, institutes There is communication connection in each interchanger stated in SDN controller and system:

The interchanger, is further used for receiving at least electric signal all the way, and for described at least each in electric signal all the way Road electric signal is handled according to following processing modes for being directed to the second road electric signal respectively: being carried in determining and the second road electric signal The corresponding input/output end port of destination address, in input/output terminal corresponding with the destination address carried in the second road electric signal When mouth load overload, Xiang Suoshu SDN controller sends the notice that load is overloaded；

The SDN controller, for sending the interchanger of the notice when receiving the notice of interchanger transmission In each input/output end port, other in addition to input/output end port corresponding with the destination address of the second road electric signal are defeated Enter/output port in select at least one input/output end port, and at least one input/output end port of selection is fed back to The interchanger for sending the notice；

In at least two interchanger, Xiang Suoshu SDN controller sends the interchanger of notice, is further used for received institute State at least one input/output end port output that at least electric signal is fed back by the SDN controller all the way.

3. system as claimed in claim 2, which is characterized in that at least one input/output terminal of the SDN controller selection Mouth is at least one the smallest input/output terminal of load capacity in the input/output end port of the interchanger for sending the notice Mouthful.

4. system as claimed in claim 2, which is characterized in that the SDN controller is sending institute according to load balancing principle It states in each input/output end port of the interchanger of notice, except input/output corresponding with the destination address of the second road electric signal At least one input/output end port is selected in other input/output end ports except port.

5. the system as described in Claims 1 to 4 is any, which is characterized in that at least one in the multiple glory module is color Optical module is located at the inside for the interchanger that there is communication connection with itself.

6. the system as described in Claims 1 to 4 is any, which is characterized in that the hub device is array waveguide grating AWG.

7. a kind of signal transmission system, which is characterized in that contain at least two star-network topological structure, each radial network Network topological structure include a hub device, at least two interchangers, multiple glory modules, at least two multiplexer/demultiplexers, with And there is communication connection at least two servers, the hub device in at least two star-networks topological structure,

Wherein, in a star-network topological structure: at least one interchanger at least two interchanger with There is communication connection, and the different input/output end ports of each interchanger and different glory modules at least one server There are communication connection, there are the different glory modules of communication connection with one in different from each interchanger input/output end ports There is communication connection in a multiplexer/demultiplexer, wherein different interchangers is logical from different multiplexer/demultiplexers by glory module Letter connection, at least two interchanger constitute star-network with one hub device by the multiplexer/demultiplexer and open up Structure is flutterred, the hub device is communicated to connect by different ports from different multiplexer/demultiplexers respectively；

Between the star-network topological structure described in any two: the friendship in one of them described star-network topological structure Change planes, for receiving at least two path signal, and in at least two path signal per electric signal all the way respectively according to Following processing modes for first via electric signal are handled: determination is corresponding defeated with the destination address carried in first via electric signal Enter/output port, is exported the first via electric signal by the input/output end port of the determination；Wherein, the destination Location is used to indicate destination server, and input/output end port corresponding with the destination address refers to logical with the destination server Believe that input/output end port corresponding to the purpose interchanger of connection, the destination server are another star-network topology knot Server in structure, the purpose interchanger are the interchanger communicated to connect with the destination server；At least two-way electricity Signal is included any of the following or is combined: with this interchanger exist communication connection server send electric signal, from This interchanger belongs to the electric signal of other interchangers of same star-network topological structure, and from belonging to not with this interchanger With the electric signal of the interchanger of star-network topological structure；

The hub device, for receiving the multiplexer/demultiplexer for being located at same star-network topological structure with the hub device The combining signal of transmission, and/or, the conjunction sent from the hub device that the hub device is located at different star-network topological structures Road signal, and the combining signal is demultiplexed, obtain multiple optical signals；By the multiple optical signal be respectively sent to wherein Each optical signal the corresponding port of purpose interchanger, and each optical signal is exported from the corresponding port, will The optical signal wavelength-division multiplex exported from same port is combining signal, wherein at least one in obtained the multiple optical signal The purpose interchanger of optical signal is located at another star-network topological structure, and the purpose interchanger is located at another star-network The optical signal of topological structure is exported by a port of the hub device, and is transmitted to another hub device；

The multiplexer/demultiplexer is further used for receiving the combining signal from the hub device that there is communication connection with itself, And demultiplex the combining signal, multiple optical signals are obtained, and the multiple optical signal is inputted and the optical signal respectively The corresponding glory module of wavelength；

The glory module is further used for receiving and believe from the light for the multiplexer/demultiplexer that there is communication connection with itself Number, and the input/output terminal for giving itself and there is the interchanger communicated to connect is exported after the optical signal is converted to electric signal Mouthful；

The interchanger is further used for for the electric signal received from the glory module that there is communication connection with itself being transmitted to The destination server of the electric signal.

8. system as claimed in claim 7, which is characterized in that the system also includes software defined network SDN controller, institutes There is communication connection in each interchanger stated in SDN controller and system:

9. system as claimed in claim 8, which is characterized in that at least one input/output terminal of the SDN controller selection Mouth is at least one the smallest input/output terminal of load capacity in the input/output end port of the interchanger for sending the notice Mouthful.

10. system as claimed in claim 8, which is characterized in that the SDN controller is being sent according to load balancing principle In each input/output end port of the interchanger of the notice, except it is corresponding with the destination address of the second road electric signal input/it is defeated At least one input/output end port is selected in other input/output end ports except exit port.

11. the system as described in claim 7~10 is any, which is characterized in that the system also includes extensible arm interchanger, institutes Hub device is stated to communicate to connect by the extensible arm interchanger and other at least one hub devices.